Bump redis from 5.0.7 to 5.2.0 in /app

Bumps [redis](https://github.com/redis/redis-py) from 5.0.7 to 5.2.0.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.0.7...v5.2.0)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

app/requirements.txt

@@ -64,7 +64,7 @@ pyrsistent==0.18.0
 python-crontab==2.5.1
 python-dateutil==2.8.2
 pytz==2022.1
-redis==5.0.7
+redis==5.2.0
 requests==2.32.3
 requests-mock==1.9.3
 six==1.16.0